Welding EGR Closed
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Welding EGR Closed
Welding EGR Closed
My 05 had a new egr cooler installed in 2010. I love to worry and I constantly worry about the cooler failing again. My wife complained that her truck would “buck” occasionally going up hills.
I pulled the valve, cleaned it and she informed me that it ran much better. Two weeks later I unhooked the egr and for at least a month now she tells me it is running great.
I am considering going to the wreckers and buying a used valve that I can tig weld closed. I was thinking that this way, if the cooler fails again the coolant soaked exhaust gases will go out the tail pipe rather than into the engine.
I realize that this can still cause an overheating issue but I think this would be preferable over the possibility of hydraulic locking and other associated issues with coolant in the cylinders.
Does this make sense? Will eliminating the air flow over the egr cooler possibly cause it to fail faster?
My 05 had a new egr cooler installed in 2010. I love to worry and I constantly worry about the cooler failing again. My wife complained that her truck would “buck” occasionally going up hills.
I pulled the valve, cleaned it and she informed me that it ran much better. Two weeks later I unhooked the egr and for at least a month now she tells me it is running great.
I am considering going to the wreckers and buying a used valve that I can tig weld closed. I was thinking that this way, if the cooler fails again the coolant soaked exhaust gases will go out the tail pipe rather than into the engine.
I realize that this can still cause an overheating issue but I think this would be preferable over the possibility of hydraulic locking and other associated issues with coolant in the cylinders.
Does this make sense? Will eliminating the air flow over the egr cooler possibly cause it to fail faster?
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My concern is that they are passing new emissions here in Ontario Canada and if I delete the egr she may not pass the test. I would hate to have to spend fifteen hours putting it back just to pass the test.<o></o>
fficeffice" /><o></o>My concern is that they are passing new emissions here in Ontario Canada and if I delete the egr she may not pass the test. I would hate to have to spend fifteen hours putting it back just to pass the test.<o
></o>
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A welded EGR cooler then becomes a coolant pipe with 2 chambers. I cannot really see the coolant part failing, but if it would it would then go into the old exhaust section and then becomes a large coolant reservoir.
It would then take a substantial leak to then compromise the entire cooler and 2 welded ends.
As for passing emissions, I see some have no issue and others have difficulty without an EGR. At least with a welded cooler you'll pass the visual test.
And I am sure a custom "emissions" tune could be written as well.
Josh
It would then take a substantial leak to then compromise the entire cooler and 2 welded ends.
As for passing emissions, I see some have no issue and others have difficulty without an EGR. At least with a welded cooler you'll pass the visual test.
And I am sure a custom "emissions" tune could be written as well.
Josh
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Ontario is going to the OBDII test. Until it is fully rolled out we won't know for sure, but the news to date is must be a factory program with no codes set, and only a certain number of pending or not complete codes. I think exploring anything that could be done by modifying the actual EGR valve is worth-while, maybe something could be done that would help. I think the first issue would be that if you lock the valve in place, the computer will set a code failing the lack of movement. It would also affect the fan operation, I think. Maybe something could be done to block the flow of exhaust gas that would allow the valve to continue to operate and not set any codes. Is there any point to blocking the flow of exhaust gas at that point, from the EGR cooler life expectancy point of view - the exhaust gas will still be in there, still hot, and coolant is still flowing through it. Might even be worse.
Brian
Brian
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Ontario is going to the OBDII test. Until it is fully rolled out we won't know for sure, but the news to date is must be a factory program with no codes set, and only a certain number of pending or not complete codes. I think exploring anything that could be done by modifying the actual EGR valve is worth-while, maybe something could be done that would help. I think the first issue would be that if you lock the valve in place, the computer will set a code failing the lack of movement. It would also affect the fan operation, I think. Maybe something could be done to block the flow of exhaust gas that would allow the valve to continue to operate and not set any codes. Is there any point to blocking the flow of exhaust gas at that point, from the EGR cooler life expectancy point of view - the exhaust gas will still be in there, still hot, and coolant is still flowing through it. Might even be worse.
Brian
Brian
The OBD scanners cannot "find" a tune in the computer, it is just checking to see if the sensors are there and can be used.
So you have:
Visual check
OBD scan
Tailpipe sniffer
Josh
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From: South Weber, Utah
In order for the EGR cooler to overheat you would need exhaust flowing through the cooler to overheat it, so if you weld the exhaust inlet and outlet the cooler cannot over heat. Also from some of the posts on here some of the later models use intake air temp to verify flow through the EGR so blocking it off on the inlet and outlet of the cooler would cause a low EGR flow code.
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In order for the EGR cooler to overheat you would need exhaust flowing through the cooler to overheat it, so if you weld the exhaust inlet and outlet the cooler cannot over heat. Also from some of the posts on here some of the later models use intake air temp to verify flow through the EGR so blocking it off on the inlet and outlet of the cooler would cause a low EGR flow code.
My opinion would be to use a known good cooler to weld up and not a known compromised unit.
Josh
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From: Central Oregon
From my understanding, when a person gets a tuner, they download their "stock" program to save and then install the newly written tune. So these strategy codes never change? They always look the same, such as like mine that is vxbc9nb. Add a tune, that code doesn't change?
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Let me ask this, if I get a tune installed, it doesn't change the Strategy code in my ECM/PCM?
From my understanding, when a person gets a tuner, they download their "stock" program to save and then install the newly written tune. So these strategy codes never change? They always look the same, such as like mine that is vxbc9nb. Add a tune, that code doesn't change?
From my understanding, when a person gets a tuner, they download their "stock" program to save and then install the newly written tune. So these strategy codes never change? They always look the same, such as like mine that is vxbc9nb. Add a tune, that code doesn't change?
VXCF4HH
Tuned strategy:
VXCF4H2
Josh
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From: Central Oregon
So, if if Ford gives their list of all the strategies they did for 03-07 6.0L engines to a government test facility, your tune would pop up as a "non-conforming" strategy would it not?
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What about replacement modules from International?
If you think the 6.0 has a lot, there are several thousand for GM vehicles.
Josh
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No, the tune writers may change your current startegy to a strategy that works better when the parameters are altered.
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From: Central Oregon
See Bullitt390's change in file name:
Stock strategy for me:
VXCF4HH
Tuned strategy:
VXCF4H2
And even if GM has thousands of files produced by them, a computer can scan those files in a heart beat.
When folks take their trucks in for "warranty work" they always flash their trucks back to "stock" "file name" so the techs couldn't see they were running a tune. Why would they need to if the strategy "file name" isn't changed by a tune writer.
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I highly doubt any emissions place would read strategies.
Besides that, those that do the OBD test allow 1-2 monitors to read "not ready" so that allows the EGR to be inoperative. Just a matter of passing the sniffer and visual.
Besides that, those that do the OBD test allow 1-2 monitors to read "not ready" so that allows the EGR to be inoperative. Just a matter of passing the sniffer and visual.